Carex atherodes Spreng.
awned sedge (wheat sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

Photograph

© Jamie Fenneman     (Photo ID #3651)


Map

E-Flora BC Static Map

Distribution of Carex atherodes
Click here to view the full interactive map and legend

Species Information

General:
Perennial, loosely tufted herb from long-creeping rhizomes; stems 30-150 cm tall, exceeding the leaves, smooth, reddish-tinged at the bases.
Leaves:
Lower sheaths breaking into threads, the middle to upper sheaths long stiff-hairy all around or sometimes only towards the summits; ligules conspicuous; blades flat, 4-10 mm wide, smooth or often stiff-hairy on the lower side towards the bases, cross-walled.
Flowers:
Spikes 4 to 10, the upper 2 to 6 with male flowers, separate, unstalked, erect, narrowly linear, 2-6 cm long, the lower 2 to 4 with female flowers, widely separated, short-stalked, erect, narrowly cylindrical, 3-10 cm long; bracts subtending the male spikes reduced or lacking, those subtending the female flowers leaflike and well developed, longer than the inflorescence.
Fruits:
Perigynia ascending, lanceolate to broadly egg-shaped, 7-10 mm long, 1.7-2.5 mm wide, yellowish-green or light brownish, smooth, somewhat inflated, many-nerved, the beaks bidentate, toothed, the spreading teeth 1.2-3 mm long; female scales narrowly egg-shaped, shorter or longer than the perigynia, awn-tipped, the awns nearly as long as the scales, dull reddish-brown with 3-nerved green centres; stigmas 3; achenes 3-angled, 2-2.5 mm long.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA

Ecology

Ecological Framework for Carex atherodes

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Avg

Min

Max

Elevation (metres)
994 80 2470
Slope Gradient (%)
3 0 85

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

140 3 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 1 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
89
Modal BEC Zone Class
IDF

All BEC Zones (# of stations/zone) species was recorded in

BG(8), BWBS(2), CWH(1), ESSF(8), ICH(4), IDF(40), IMA(1), MH(1), MS(2), PP(5), SBPS(11), SBS(6)

Habitat and Range

Wet meadows, fens, marshes and lakeshores in the montane and steppe zones; frequent in BC south of 53degreeN and E of the Coast-Cascade Mountains, infrequent northward; circumpolar, N to AK, YT and NT, E to PQ and S to ME, NY, IN, MO, KS, NM, AZ and CA; Eurasia.

SourceThe Illustrated Flora of British Columbia